[!]Locked Out[!]

I have the worst of luck…I have 2 accounts on my windows 8 pro desk computer, One for my 10 year old son and one for myself, On my sons account i have the User account control locked so he cant mess with that stuff and his User account control level is moderate so it wont let him install or modify the computer without my permission.. well unfortunately i have locked myself out of my account after i changed all the passwords (I know..) so now im stuck on a account where i cannot do anything, I tried changing the u.a.c but that is locked! Im really stressed. I don’t want to system reset my computer or anything i have alot of precious photos and memorys on it, Please i really need someones help!